US PATENT SUBCLASS 420 / 461
OSMIUM OR IRIDIUM BASE

Current as of: June, 1999
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420 /   HD   ALLOYS OR METALLIC COMPOSITIONS

461OSMIUM OR IRIDIUM BASE

DEFINITION

Classification: 420/461

OSMIUM OR IRIDIUM BASE:

(under the class definition) Alloy, or metallic composition which contains over 50 percent of osmium, or over 50 percent iridium by weight.